<?xml version="1.0"?>
<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en-GB">
	<id>https://livingbooksaboutlife.org/wiki/index.php?action=history&amp;feed=atom&amp;title=The_in%2Fvisible%2Fintroduction</id>
	<title>The in/visible/introduction - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://livingbooksaboutlife.org/wiki/index.php?action=history&amp;feed=atom&amp;title=The_in%2Fvisible%2Fintroduction"/>
	<link rel="alternate" type="text/html" href="https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;action=history"/>
	<updated>2026-04-22T08:10:03Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.41.0</generator>
	<entry>
		<id>https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=4147&amp;oldid=prev</id>
		<title>Pw: Unprotected &quot;The in/visible/introduction&quot;</title>
		<link rel="alternate" type="text/html" href="https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=4147&amp;oldid=prev"/>
		<updated>2011-10-25T19:52:01Z</updated>

		<summary type="html">&lt;p&gt;Unprotected &amp;quot;&lt;a href=&quot;/wiki/index.php/The_in/visible/introduction&quot; title=&quot;The in/visible/introduction&quot;&gt;The in/visible/introduction&lt;/a&gt;&amp;quot;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en-GB&quot;&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 19:52, 25 October 2011&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en-GB&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>Pw</name></author>
	</entry>
	<entry>
		<id>https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=3840&amp;oldid=prev</id>
		<title>Pw: Protected &quot;The in/visible/introduction&quot; ([edit=sysop] (indefinite) [move=sysop] (indefinite))</title>
		<link rel="alternate" type="text/html" href="https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=3840&amp;oldid=prev"/>
		<updated>2011-10-11T13:12:18Z</updated>

		<summary type="html">&lt;p&gt;Protected &amp;quot;&lt;a href=&quot;/wiki/index.php/The_in/visible/introduction&quot; title=&quot;The in/visible/introduction&quot;&gt;The in/visible/introduction&lt;/a&gt;&amp;quot; ([edit=sysop] (indefinite) [move=sysop] (indefinite))&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en-GB&quot;&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 13:12, 11 October 2011&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en-GB&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>Pw</name></author>
	</entry>
	<entry>
		<id>https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=3471&amp;oldid=prev</id>
		<title>Joanna at 09:31, 1 October 2011</title>
		<link rel="alternate" type="text/html" href="https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=3471&amp;oldid=prev"/>
		<updated>2011-10-01T09:31:59Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en-GB&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 09:31, 1 October 2011&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;'''Clare Birchall''' &amp;lt;br&amp;gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[http://www.livingbooksaboutlife.org/books/The_in/visible &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Back to the book&lt;/ins&gt;]  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;br&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Return to &lt;/del&gt;[http://www.livingbooksaboutlife.org/books/The_in/visible &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;In/Visible Living Book&lt;/del&gt;]  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;= Clare Birchall&amp;lt;br&amp;gt; '''Introduction''' =&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-added&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;br&amp;gt;‘Light is too corruptible, too shifting and inconstant to form the basis of the relationship to the self and to the All.’ (Irigaray, 1974: 148) &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;‘Incredible how you can see right through me.’ (Queen, ‘Invisible Man’) &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Given that the essence of the invisible lies in our inability to see it, the large number of cultural attempts to represent and mobilise it as metaphor presents an irony. The use of invisibility as a trope dates back at least to the legend of Gyges, discussed in Plato's ''Republic'', written around 360 BC. Gyges discovers a ring that makes him invisible; the advantage this bestows&amp;amp;nbsp;helps him to win a kingdom. Ancient etymology indicates that the name of Hades, Greek god of the underworld, means ‘invisible’ and&amp;amp;nbsp;in mythology, a helmet, rather than a ring, enables Hades to escape detection (Roman &amp;amp;amp; Roman, 2009: 182). More recently, H.G. Wells warned of its dangers, exploring the suspicion and havoc invisibility can wreak; Queen have sung about its appeal; and Harry Potter dons an invisibility cloak to vanquish dark forces in the first book. In philosophy, at least for Merleau-Ponty and Derrida, albeit in different ways, the possibility of perception relies on the difference between the visible and invisible (see Reynolds, 2004). After Adam Smith, economists refer to the ‘invisible hand’ of the market: indicating a supposedly self-regulating entity. In terms of identity politics the invisible is used as a marker of the marginalised and voiceless – unrecognised by the state or society and without power, they are ''effectively ''invisible. Ralph Ellison’s ''Invisible Man'', for example, begins: ‘I am an invisible man. No, I am not a spook like those who haunted Edgar Allan Poe; nor am I one of your Hollywood-movie ectoplasms. I am a man of substance, of flesh and bone, fibre and liquids - and I might even be said to possess a mind. I am invisible, understand, simply because people refuse to see me’ (1952: 1). As a result of all this cultural activity around the invisible, the strangeness, the absence, the alterity that attracts us, and encourages us to find ways to represent invisibility through existing paradigms, is undoubtedly domesticated. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;The trope of invisibility clearly has creative, political, epistemological and cultural force. But invisibility is not just a cultural trope: it is a physical state from which these other uses borrow meaning. Invisible matter is that which neither reflects nor absorbs light. It is a state that assumes its full resonance in relation to a human viewer: invisibility is nothing more than that which lies outside the visible spectrum (although we will need to consider the role of technology in the enhancement of vision and detection). In this respect, invisibility is not a positive property of the matter observed, but a limitation in, or manipulation of, the observer’s visual apparatus. Such a description works just as well at the metaphorical level - whether we are referring to cultural limitations, as with Ellison’s white folk, or psychological limitations in which the psyche refuses to face certain events or truths - as it does in reference to the physiological limitations of the human eye. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Of course, it is not the case that we have the physical state of invisibility as a scientific object on the one hand, and cultural attempts to represent it on the other. Science, too, seeks ways to represent that which is invisible. It is highly concerned with how to make invisible matter visible (or at least visible enough for us to secure proof of existence). In this joint concern, both science and culture (if we can even separate these realms at all) mediate our understanding of the invisible. Language is one apparatus used to bring the invisible into what we can only metaphorically refer to as the ‘line of vision’, whether this be the trick of creative representation, access to God through religious texts and images, consciousness raising of marginalised human experience through written testimony, or the writing up of scientific experiments. Some phenomena require ways of ‘seeing’ which are less about visibility than cognition. Take ‘dark matter’, for example – a term Fritz Zwicky invented in the 1930s to refer to the missing mass of galaxies – which can only be hailed by mathematical calculation. These calculations estimate the non-baryonic mass present given the gravitational influence on the motion of gas and stars in galaxies and galaxies within clusters. &amp;lt;br&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;br&amp;gt;‘Light is too corruptible, too shifting and inconstant to form the basis of the relationship to the self and to the All.’ (Irigaray, 1974: 148) &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;‘Incredible how you can see right through me.’ (Queen, ‘Invisible Man’) &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Given that the essence of the invisible lies in our inability to see it, the large number of cultural attempts to represent and mobilise it as metaphor presents an irony. The use of invisibility as a trope dates back at least to the legend of Gyges, discussed in Plato's ''Republic'', written around 360 BC. Gyges discovers a ring that makes him invisible; the advantage this bestows&amp;amp;nbsp;helps him to win a kingdom. Ancient etymology indicates that the name of Hades, Greek god of the underworld, means ‘invisible’ and&amp;amp;nbsp;in mythology, a helmet, rather than a ring, enables Hades to escape detection (Roman &amp;amp;amp; Roman, 2009: 182). More recently, H.G. Wells warned of its dangers, exploring the suspicion and havoc invisibility can wreak; Queen have sung about its appeal; and Harry Potter dons an invisibility cloak to vanquish dark forces in the first book. In philosophy, at least for Merleau-Ponty and Derrida, albeit in different ways, the possibility of perception relies on the difference between the visible and invisible (see Reynolds, 2004). After Adam Smith, economists refer to the ‘invisible hand’ of the market: indicating a supposedly self-regulating entity. In terms of identity politics the invisible is used as a marker of the marginalised and voiceless – unrecognised by the state or society and without power, they are ''effectively ''invisible. Ralph Ellison’s ''Invisible Man'', for example, begins: ‘I am an invisible man. No, I am not a spook like those who haunted Edgar Allan Poe; nor am I one of your Hollywood-movie ectoplasms. I am a man of substance, of flesh and bone, fibre and liquids - and I might even be said to possess a mind. I am invisible, understand, simply because people refuse to see me’ (1952: 1). As a result of all this cultural activity around the invisible, the strangeness, the absence, the alterity that attracts us, and encourages us to find ways to represent invisibility through existing paradigms, is undoubtedly domesticated. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;The trope of invisibility clearly has creative, political, epistemological and cultural force. But invisibility is not just a cultural trope: it is a physical state from which these other uses borrow meaning. Invisible matter is that which neither reflects nor absorbs light. It is a state that assumes its full resonance in relation to a human viewer: invisibility is nothing more than that which lies outside the visible spectrum (although we will need to consider the role of technology in the enhancement of vision and detection). In this respect, invisibility is not a positive property of the matter observed, but a limitation in, or manipulation of, the observer’s visual apparatus. Such a description works just as well at the metaphorical level - whether we are referring to cultural limitations, as with Ellison’s white folk, or psychological limitations in which the psyche refuses to face certain events or truths - as it does in reference to the physiological limitations of the human eye. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Of course, it is not the case that we have the physical state of invisibility as a scientific object on the one hand, and cultural attempts to represent it on the other. Science, too, seeks ways to represent that which is invisible. It is highly concerned with how to make invisible matter visible (or at least visible enough for us to secure proof of existence). In this joint concern, both science and culture (if we can even separate these realms at all) mediate our understanding of the invisible. Language is one apparatus used to bring the invisible into what we can only metaphorically refer to as the ‘line of vision’, whether this be the trick of creative representation, access to God through religious texts and images, consciousness raising of marginalised human experience through written testimony, or the writing up of scientific experiments. Some phenomena require ways of ‘seeing’ which are less about visibility than cognition. Take ‘dark matter’, for example – a term Fritz Zwicky invented in the 1930s to refer to the missing mass of galaxies – which can only be hailed by mathematical calculation. These calculations estimate the non-baryonic mass present given the gravitational influence on the motion of gas and stars in galaxies and galaxies within clusters. &amp;lt;br&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Joanna</name></author>
	</entry>
	<entry>
		<id>https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2614&amp;oldid=prev</id>
		<title>129.12.29.78 at 11:43, 22 September 2011</title>
		<link rel="alternate" type="text/html" href="https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2614&amp;oldid=prev"/>
		<updated>2011-09-22T11:43:52Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;a href=&quot;https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;amp;diff=2614&amp;amp;oldid=2613&quot;&gt;Show changes&lt;/a&gt;</summary>
		<author><name>129.12.29.78</name></author>
	</entry>
	<entry>
		<id>https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2613&amp;oldid=prev</id>
		<title>129.12.29.78 at 11:11, 22 September 2011</title>
		<link rel="alternate" type="text/html" href="https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2613&amp;oldid=prev"/>
		<updated>2011-09-22T11:11:59Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en-GB&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 11:11, 22 September 2011&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l3&quot;&gt;Line 3:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 3:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Return to [http://www.livingbooksaboutlife.org/books/The_in/visible In/Visible Living Book]  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Return to [http://www.livingbooksaboutlife.org/books/The_in/visible In/Visible Living Book]  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;br&amp;gt;‘Light is too corruptible, too shifting and inconstant to form the basis of the relationship to the self and to the All.’ (Irigaray, 1974: 148) &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;‘Incredible how you can see right through me.’ (Queen, ‘Invisible Man’) &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Given that the essence of the invisible lies in our inability to see it, the large number of cultural attempts to represent and mobilise it as metaphor presents an irony. The use of invisibility as a trope dates back at least to the legend of Gyges, discussed in Plato's ''Republic'', written around 360 BC. Gyges discovers a ring that makes him invisible; the advantage this &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;affords&lt;/del&gt;&amp;amp;nbsp;helps him to win a kingdom. Ancient etymology indicates that the name of Hades, Greek god of the underworld, means ‘invisible’ and&amp;amp;nbsp;in mythology, a helmet, rather than a ring, enables Hades to escape detection (Roman &amp;amp;amp; Roman, 2009: 182). More recently, H.G. Wells warned of its dangers, exploring the suspicion and havoc invisibility can wreak; Queen have sung about its appeal; and Harry Potter dons an invisibility cloak to vanquish dark forces in the first book. In philosophy, at least for Merleau-Ponty and Derrida, albeit in different ways, the possibility of perception relies on the difference between the visible and invisible (see Reynolds, 2004). After Adam Smith, economists refer to the ‘invisible hand’ of the market: indicating a supposedly self-regulating entity. In terms of identity politics the invisible is used as a marker of the marginalised and voiceless – unrecognised by the state or society and without power, they are ''effectively ''invisible. Ralph Ellison’s ''Invisible Man'', for example, begins: ‘I am an invisible man. No, I am not a spook like those who haunted Edgar Allan Poe; nor am I one of your Hollywood-movie ectoplasms. I am a man of substance, of flesh and bone, fibre and liquids - and I might even be said to possess a mind. I am invisible, understand, simply because people refuse to see me’ (1952: 1). As a result of all this cultural activity around the invisible, the strangeness, the absence, the alterity that attracts us, and encourages us to find ways to represent invisibility through existing paradigms, is undoubtedly domesticated. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;The trope of invisibility clearly has creative, political, epistemological and cultural force. But invisibility is not just a cultural trope: it is a physical state from which these other uses borrow meaning. Invisible matter is that which neither reflects nor absorbs light. It is a state that assumes its full resonance in relation to a human viewer: invisibility is nothing more than that which lies outside the visible spectrum (although we will need to consider the role of technology in the enhancement of vision and detection). In this respect, invisibility is not a positive property of the matter observed, but a limitation in, or manipulation of, the observer’s visual apparatus. Such a description works just as well at the metaphorical level - whether we are referring to cultural limitations, as with Ellison’s white folk, or psychological limitations in which the psyche refuses to face certain events or truths - as it does in reference to the physiological limitations of the human eye. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Of course, it is not the case that we have the physical state of invisibility as a scientific object on the one hand, and cultural attempts to represent it on the other. Science, too, seeks ways to represent that which is invisible. It is highly concerned with how to make invisible matter visible (or at least visible enough for us to secure proof of existence). In this joint concern, both science and culture (if we can even separate these realms at all) mediate our understanding of the invisible. Language is one apparatus used to bring the invisible into what we can only metaphorically refer to as the ‘line of vision’, whether this be the trick of creative representation, access to God through religious texts and images, consciousness raising of marginalised human experience through written testimony, or the writing up of scientific experiments. Some phenomena require ways of ‘seeing’ which are less about visibility than cognition. Take ‘dark matter’, for example – a term Fritz Zwicky invented in the 1930s to refer to the missing mass of galaxies – which can only be hailed by mathematical calculation. These calculations estimate the non-baryonic mass present given the gravitational influence on the motion of gas and stars in galaxies and galaxies within clusters. &amp;lt;br&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;br&amp;gt;‘Light is too corruptible, too shifting and inconstant to form the basis of the relationship to the self and to the All.’ (Irigaray, 1974: 148) &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;‘Incredible how you can see right through me.’ (Queen, ‘Invisible Man’) &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Given that the essence of the invisible lies in our inability to see it, the large number of cultural attempts to represent and mobilise it as metaphor presents an irony. The use of invisibility as a trope dates back at least to the legend of Gyges, discussed in Plato's ''Republic'', written around 360 BC. Gyges discovers a ring that makes him invisible; the advantage this &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;bestows&lt;/ins&gt;&amp;amp;nbsp;helps him to win a kingdom. Ancient etymology indicates that the name of Hades, Greek god of the underworld, means ‘invisible’ and&amp;amp;nbsp;in mythology, a helmet, rather than a ring, enables Hades to escape detection (Roman &amp;amp;amp; Roman, 2009: 182). More recently, H.G. Wells warned of its dangers, exploring the suspicion and havoc invisibility can wreak; Queen have sung about its appeal; and Harry Potter dons an invisibility cloak to vanquish dark forces in the first book. In philosophy, at least for Merleau-Ponty and Derrida, albeit in different ways, the possibility of perception relies on the difference between the visible and invisible (see Reynolds, 2004). After Adam Smith, economists refer to the ‘invisible hand’ of the market: indicating a supposedly self-regulating entity. In terms of identity politics the invisible is used as a marker of the marginalised and voiceless – unrecognised by the state or society and without power, they are ''effectively ''invisible. Ralph Ellison’s ''Invisible Man'', for example, begins: ‘I am an invisible man. No, I am not a spook like those who haunted Edgar Allan Poe; nor am I one of your Hollywood-movie ectoplasms. I am a man of substance, of flesh and bone, fibre and liquids - and I might even be said to possess a mind. I am invisible, understand, simply because people refuse to see me’ (1952: 1). As a result of all this cultural activity around the invisible, the strangeness, the absence, the alterity that attracts us, and encourages us to find ways to represent invisibility through existing paradigms, is undoubtedly domesticated. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;The trope of invisibility clearly has creative, political, epistemological and cultural force. But invisibility is not just a cultural trope: it is a physical state from which these other uses borrow meaning. Invisible matter is that which neither reflects nor absorbs light. It is a state that assumes its full resonance in relation to a human viewer: invisibility is nothing more than that which lies outside the visible spectrum (although we will need to consider the role of technology in the enhancement of vision and detection). In this respect, invisibility is not a positive property of the matter observed, but a limitation in, or manipulation of, the observer’s visual apparatus. Such a description works just as well at the metaphorical level - whether we are referring to cultural limitations, as with Ellison’s white folk, or psychological limitations in which the psyche refuses to face certain events or truths - as it does in reference to the physiological limitations of the human eye. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Of course, it is not the case that we have the physical state of invisibility as a scientific object on the one hand, and cultural attempts to represent it on the other. Science, too, seeks ways to represent that which is invisible. It is highly concerned with how to make invisible matter visible (or at least visible enough for us to secure proof of existence). In this joint concern, both science and culture (if we can even separate these realms at all) mediate our understanding of the invisible. Language is one apparatus used to bring the invisible into what we can only metaphorically refer to as the ‘line of vision’, whether this be the trick of creative representation, access to God through religious texts and images, consciousness raising of marginalised human experience through written testimony, or the writing up of scientific experiments. Some phenomena require ways of ‘seeing’ which are less about visibility than cognition. Take ‘dark matter’, for example – a term Fritz Zwicky invented in the 1930s to refer to the missing mass of galaxies – which can only be hailed by mathematical calculation. These calculations estimate the non-baryonic mass present given the gravitational influence on the motion of gas and stars in galaxies and galaxies within clusters. &amp;lt;br&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Image:Nasa1.jpg|border|left|143x111px|Dark Matter Lensing - Illustration Credit NASA/CXC/M. WEISS]]  &lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Image:Nasa1.jpg|border|left|143x111px|Dark Matter Lensing - Illustration Credit NASA/CXC/M. WEISS]]  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>129.12.29.78</name></author>
	</entry>
	<entry>
		<id>https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2477&amp;oldid=prev</id>
		<title>129.12.29.78 at 15:17, 19 September 2011</title>
		<link rel="alternate" type="text/html" href="https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2477&amp;oldid=prev"/>
		<updated>2011-09-19T15:17:25Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;a href=&quot;https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;amp;diff=2477&amp;amp;oldid=2476&quot;&gt;Show changes&lt;/a&gt;</summary>
		<author><name>129.12.29.78</name></author>
	</entry>
	<entry>
		<id>https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2476&amp;oldid=prev</id>
		<title>129.12.29.78 at 15:16, 19 September 2011</title>
		<link rel="alternate" type="text/html" href="https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2476&amp;oldid=prev"/>
		<updated>2011-09-19T15:16:04Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;a href=&quot;https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;amp;diff=2476&amp;amp;oldid=2475&quot;&gt;Show changes&lt;/a&gt;</summary>
		<author><name>129.12.29.78</name></author>
	</entry>
	<entry>
		<id>https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2475&amp;oldid=prev</id>
		<title>129.12.29.78 at 15:13, 19 September 2011</title>
		<link rel="alternate" type="text/html" href="https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2475&amp;oldid=prev"/>
		<updated>2011-09-19T15:13:00Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;a href=&quot;https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;amp;diff=2475&amp;amp;oldid=2474&quot;&gt;Show changes&lt;/a&gt;</summary>
		<author><name>129.12.29.78</name></author>
	</entry>
	<entry>
		<id>https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2474&amp;oldid=prev</id>
		<title>129.12.29.78 at 15:09, 19 September 2011</title>
		<link rel="alternate" type="text/html" href="https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2474&amp;oldid=prev"/>
		<updated>2011-09-19T15:09:53Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;a href=&quot;https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;amp;diff=2474&amp;amp;oldid=2473&quot;&gt;Show changes&lt;/a&gt;</summary>
		<author><name>129.12.29.78</name></author>
	</entry>
	<entry>
		<id>https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2473&amp;oldid=prev</id>
		<title>129.12.29.78 at 15:08, 19 September 2011</title>
		<link rel="alternate" type="text/html" href="https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;diff=2473&amp;oldid=prev"/>
		<updated>2011-09-19T15:08:33Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;a href=&quot;https://livingbooksaboutlife.org/wiki/index.php?title=The_in/visible/introduction&amp;amp;diff=2473&amp;amp;oldid=2472&quot;&gt;Show changes&lt;/a&gt;</summary>
		<author><name>129.12.29.78</name></author>
	</entry>
</feed>